Its pretty clear that a person who would dedicate their young years to charity work, already have those qualities. I'm thinking she might have retains some fragments of that, as she worked at her real skills and donated significantly.
That's like saying: "Anyone who would want to go to the gym is already pretty fit, so they don't need to go to the gym." The emotional muscles of charity need a workout just as much as our physical muscles. If you don't exercise them, they atrophy.
I agree she would she would retain some fragments of that, but she still could be substantially changed. See vacri's sibling (cousin?) post for an anecdote.